Added front-end ReactApp, with basic CRUD functionality for Bookmark entries

yaba-web/src/utils/dateTimeHelper.js

@@ -0,0 +1,38 @@
+import dayjs from "dayjs";
+
+const utc = require('dayjs/plugin/utc')
+const timezone = require('dayjs/plugin/timezone') // dependent on utc plugin
+dayjs.extend(utc);
+dayjs.extend(timezone);
+
+export default class DateTimeHelper {
+    static ISO8601_DATETIMEFORMAT = () => {
+        return 'YYYY-MM-DD HH:mm';
+    };
+    
+    static toLocalDateTime = (dateTimeString, formatString) => {
+        return dayjs(dateTimeString).local().format(formatString ?? this.ISO8601_DATETIMEFORMAT());
+    };
+
+    static toString = (dateTimeString, formatString) => {
+        return dayjs(dateTimeString).format(formatString);
+    };
+
+    static getFriendlyDate = (dateTimeString) => {
+        const dateTimeStringInUtc = dayjs(dateTimeString).utc();
+        const currentUtcDateTime = dayjs().utc();
+
+        if(currentUtcDateTime.diff(dateTimeStringInUtc, 'day') <= 7) {
+            return dateTimeStringInUtc.local().format('dddd');
+        } else if(currentUtcDateTime.diff(dateTimeStringInUtc, 'week') <= 4) {
+            const differenceInWeeks = currentUtcDateTime.diff(dateTimeStringInUtc, 'week');
+            return `${differenceInWeeks} ${ differenceInWeeks <= 1 ? 'week' : 'weeks'} ago`;
+        } else if(currentUtcDateTime.diff(dateTimeStringInUtc, 'month') <= 12) {
+            const differenceInMonths = currentUtcDateTime.diff(dateTimeStringInUtc, 'month');
+            return `${differenceInMonths} ${ differenceInMonths <= 1 ? 'month' : 'months' } ago`;
+        } else {
+            const differenceInYears = currentUtcDateTime.diff(dateTimeStringInUtc, 'year');
+            return `${differenceInYears} ${ differenceInYears <= 1 ? 'year' : 'years'} ago`;
+        }
+    };
+}